Lexis
The below titles can be found several ways; one way is, within Legal Research (icon to the left), select International (tab in the middle-right) , click on Treatises & Guides (under Secondary Materials) and select Tax Law (within Practice Area towards the bottom).
Westlaw
Similar to Lexis, Westlaw can be searched multiple ways to identify potentially relevant treatises related to international tax. One way is to select the Secondary Sources link towards the upper right, scroll down to Tax (within By Topic) and then, in the search by title, input international. See this illustration.
International Taxation
Call number area for International Taxation is within the general area for taxation: 4th floor in Law Library, KF 6400’s.
Tax Treaty(ies)
U.S. Tax Treaties (CCH) as of 2010 available in print in Law Library (within the Tax Index section on 4th floor)